辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(3)：255-260,6.DOI:10.11956/j.issn.1008-0562.2017.03.006
煤堆自燃的数值模拟及分析
Numerical simulation and analysis of the coal spontaneous combustion
张璐宇 1张小双 1赵象卓 1吴涛1
作者信息
- 1. 辽宁工程技术大学矿业学院,辽宁阜新123000
- 折叠
摘要
Abstract
In order to study the influence factors of the spontaneous combustion of coal pile under the condition of natural accumulation,this paper transformed the real engineering issues which are not easy to be observed on site into problems can be simulated by computer,and established two dimensional model of natural storage of coal pile and the mathematical model of coal spontaneous combustion coupled with the energy equation and oxygen concentration equation.The multi-physical field coupling analysis software COMSOL was used to calculate the solution.The results show that the occurrence of spontaneous combustion occurred in 60th days;the coal stack has been completely spontaneous combustion by the 100th day;the oxygen concentration showed three bands distribution with time changing.By changing the height and porosity of coal pile,the calculation shows that with the coal stack height and porosity increase,the coal pile is more prone to spontaneous combustion phenomenon.The results of the analysis show that the phenomenon of spontaneous combustion of coal is three zone distribution,and the porosity and the height of coal pile and the occurrence of spontaneous combustion of coal is a positive correlation.关键词
煤堆自燃/多场耦合/数值模拟/影响因素/孔隙率Key words
coal spontaneous combustion/several coupling/the numerical simulation/influence factors/porosity分类
矿业与冶金引用本文复制引用
张璐宇,张小双,赵象卓,吴涛..煤堆自燃的数值模拟及分析[J].辽宁工程技术大学学报（自然科学版）,2017,36(3):255-260,6.
